The keyboard arrow keys relate to the direction of movement of the cutter over the workpiece so yes, the down arrow key would move the cutter to -Y on the workpiece and to do this the table would move away from you.
(You could, of course, always set-up a 'non-standard system' as in Config. / System Hotkeys Setup you can reverse the Scan Codes for the Y++ and Y-- Jog Hotkeys).
Tweakie.